– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Sat 18 Jul Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Sat 18 Jul Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Sat 18 Jul Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Warm (max 28°C on Mon afternoon, min 13°C on Sat morning). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Warm (max 29°C on Tue afternoon, min 14°C on Thu night). Wind will be generally light. | |||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | | |  | | | |  | | | | | |  | |
rain shwrs | rain shwrs | clear | clear | clear | clear | clear | some clouds | clear | clear | some clouds | some clouds | some clouds | some clouds | clear | clear | rain shwrs | rain shwrs | |
Cloud base (m) | 900 | 1850 | 8850 | 6550 | 5300 | 5250 | 4550 | 4200 | 5050 | 4150 | 3000 | |||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.1 | 0.3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.5 | 0.1 |
max °C | 16 | 19 | 17 | 19 | 23 | 20 | 25 | 28 | 25 | 27 | 29 | 25 | 27 | 29 | 24 | 25 | 26 | 22 |
min °C | 13 | 18 | 13 | 16 | 22 | 17 | 21 | 28 | 21 | 23 | 29 | 21 | 23 | 29 | 20 | 22 | 24 | 14 |
chill °C | 13 | 18 | 13 | 16 | 22 | 17 | 21 | 28 | 21 | 23 | 29 | 21 | 23 | 29 | 20 | 22 | 24 | 14 |
Freezing level m | 2850 | 3500 | 3900 | 3850 | 4000 | 4250 | 4300 | 4400 | 4450 | 4550 | 4650 | 4750 | 4500 | 4500 | 4300 | 4100 | 4000 | 3500 |
 | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | — | 9:02 | — | — | 9:01 | — | — | 9:00 | — | — | 9:00 | — | — | 8:59 | — | — | 8:58 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Warm (max 28°C on Mon afternoon, min 13°C on Sat morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Warm (max 29°C on Tue afternoon, min 14°C on Thu night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport |  | ||||
BUOY-46118 | |||||
SHIP8496 | |||||
SHIP2842 | |||||
Abbotsford Airport |  | ||||
SHIP6439 | |||||
SHIP7348 | |||||
SHIP5550 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.